statutory exclusion and elapsed time

[cpc0506]

If you elect in the Adoption Agreement to define Eligible employees as all employees EXCEPT for part-time/seasonal employees, where part-time or seasonal employee is defined as an employee whos regularly scheduled service is less than 1000 hours of service in the relevant eligilbity computation period.

Can you then go on and chose the conditions of eligiblity as 21 and 90 days of service?

In order of heirarchy, does the definiton of eligible employee supercede the eligibility requirements?

Thanks.